Lathe.



Gr. A. STEINLE.

LATHE.

APPLICATION FILED MAY 25, 1908.

4 SHEETS-SHEET 1 Patented Jan. 18, 1910.

G. A. STEINLE.

LATHE.

- APPLICATION FILED MAY 25, 1908.

946,989.- Patented Jan. 18, 1910.

4 SHEETSSHEET 2.

G. A. STEINLE.

LATHE.

APPLICATION FILED MAY 25, 1908.

946,989, Patented Jan. 18, 1910 5 4 SHEETS-SHEET 3- 54 3x G. A. STEINLE.

LATHE.

APPLICATION FILED MAY 25, 1908.

946,989 Patented Jan 18, 1910.

4 SHBETS SHEET 4.

UNITED STATES PATENT OFFICE.

GEORGE A. STEINLE, OF MADISON, WISCONSIN, ASSIG-NOR TO STEINLE TURRETMACHINE COMPANY, OF MADISON, WISCONSIN, A CORPORATION.

LATHE.

Specification of Letters Patent.

Patented Jan. 18, 1910.

To all whom 'it may concern:

Be it known that I, GEORGE A. STEINLE, of Madison, Dane county,Wisconsin, have invented certain new and useful Improvements in Lathes,of which the following is a specification.

This invention relates to lathes of the turret type and the object ofthe invention is to provide an improved form of turret having meanswhereby the work of drilling can be facilitated, and upon which facingheads,

1 that have practically no over-hang from the trated a com lete lathe.

face of the turret, may be mounted.

Other objects of the invention will appear from the following detaileddescription, taken in connection with the accompanying drawings, inwhich Figure 1 is a side elevation of a turret lathe embodying myinvention. Fig. 2 is a detail sectional view, taken transversely of thelathe-bed and through the turret, illustrating the construction of thesame, and the manner of mounting it on the carriage. Fig. 8 is a detailsectional view, illustrating a portion of the drive mechanism from thelathe spindle to the drill carrier. Fig. 4 is a top view of the samepartially in section, illustrating the clutch-device by means of whichthe drive is rendered operative-or inoperative. Fig. 5 is a sideelevation of the turret, showing the adjustable facing blocks, and aportion of the mechanism for tripping the lathe carriage drive at apredetermined time. Fig. 6 is a top view ofthe same, partially insection, illustrating the turret lock and another portion of thecarriage-drive tripping mechanism. Fig. 7 is a sectional view throughthe carriage and a portion of the lathe bed, illustrating the locationof the mechanism thereon by which the carriage-drive is controlled. Fig.8 is a detail view of a portion of the tripping mechanism. Fig. 9 is atop view of the stop device on the lathe bed by means of which thetripping mechanism is actuated. v I

In Fig. l of the drawings I have -illus-. Portions of this machine areescribed and claimed in Letters Patent of the United States issued to meMarch 23, 1909, No. 915,900, and in pending applications Serial No.410,367, filed January 11, 1908, and Serial No. 424,159, filed March 30,1908.

The present application relates particularly to improvements in theturret and themeans by which, through the turret, the movement of itssupporting carriage is controlled.

In Fig. 1 of the drawings, I have illustrated two movable carriages. Thepresent application, however, relates particularly to the carriage shownat the right of Fig. 1 of the drawings and on which the turret issupported. This carriage is designated in the drawing by the referencenumeral 3. Upon the same figure of the drawings, 4, 5 and 6 represent,respectively, the normally stationary lead-screw-shaft, the feed-shaftand the speed-shaft. 7 represents the bed of the lathe on which thecarriage is adapted to slide. This carriage has a seat 8 for the hub 9of the turret 10. The hub 9 incloses upon a stud 12 formed on thecarriage 3 (see Fig.2). A bolt 13 passes down through the boss 11 andthe stud 12 is provided with a lock-nut 14 on its lower end, by means ofwhich the turret is secured on the carriage. A ball-bearing 15 isinterposed between the boss 11 and the stud 12, and a compression spring16 is provided on said stud and serves to relieve the dead load of theturret thereon, permitting it to revolve freely to obtain the variousadjustments.

The turret is provided with a series of head-blocks 17, which are shownas formed integrally with said turret. These headblocks are adapted tosupport and hold suit? able tools. There may be any desired number ofthese head-blocks, but I prefer to provide four of them arranged inpairs on opposite sides of the turret with intermediate spaces betweenthem, in which are mounted the facing heads 17'. The upper face of theturret is preferably 'PIOVldGd with a suitable groove 17 and the facingheads 17 are preferably provided with a tongue or rib, which fits intosaid groove, as indicated by dotted lines in Fig. 7, and said facingheads are secured in position on the turret by bolts, or other suitablemeans.

I have shown in Fig. 7 of the drawings one long and one short facinghead. As here shown, the facing head 17 at the left, extends inwardbeyond the center of the turret, while the facing head 17, at the right,

' does not extend to the center of the turret.

In Fig. 6 of the drawings, I. have shown the facing heads 17, bothshort, or not extending to the center of the turret. It will be seenthat with this construction of the turret, having the head-blocks 17arranged in pairs with intermediate spaces between them, I am enabled touse the facing heads 17 of any desired length. I may use a single longfacin head, or two short heads, or one long hea and one short head, andthese facing heads, being arranged in the spaces between the ends of theopposite pairs of head-blocks 17, do not need to overhang the outercircumference of the turret, but maybe adjusted on the base of theturret to any desired position and they form supports for the toolholders, as hereinafter described, and upon which said tool holders maybe adjusted, either parallel with the line of movement of the turretslide, or at right angles thereto. This construction of the turret andthis arrangement of the facing heads insure the greatest rigidity forfinishing work with wide cutters.

A floating roller 20 (see Fig. 2) may be provided within an oil well 21and is adapted to contact with the under surface of the turret head.

For the purpose of locking the turret, when adjusted, I provide a camring 22, mounted on the hub 9, between a cam surface 23, on the seat 8,and a ring 24 that is threaded on the lower end of said hub. The

, ring 22 has a limited oscillating movement,

and carries a cam lug 25 that is adapted to enter a recess 26 in alocking pin 27 that fits within a socket 28 in the carriage, and isadapted to enter recesses 18 in the bottom of the turret and positivelylock it against movement in either direction. The pin 27 is normallyheld in its raised position by a spring 27 The locking ring is actuatedby means of a lever 30, fitting within a socket 31, on said ring, andmovable back and forth within an opening 32 in thewall of said carriage.By a slight movement of this lever the operator of the lathe can raiseor lower the locking pin 27 and lock or release the turret.

On the lower end of the hub 9 I provide a cam surface 33, the purpose ofwhich will hereinafter appear. In one of the headblocks on the turret Iprovide a drill carrier 34, having a bearing 35, to resist end thrust ofthe drill, and projecting inwardly toward the center of the turret, andprovided at its inner end with a miter-gear 36 meshing with a similargear 37 on a vertical shaft 38 that is journaled in the hub 39 of acasting 40, mounted on the top of the turret. The shaft 38 has a gear 41meshing with an idle gear 42, mounted on a sleeve 43, that is free toturn in hearings in the casting 40. A horizontal shaft 44 extendslengthwise of the lathe bed, and has a gear 45 that is driven through atrain of gears 46 from the lathe spindle. A clutch 47 is splined on theshaft 44 and is adapted to lock the idle gear 42 on said shaft, saidclutch being operated by means of a pin 48 having an eccentricconnection 49 with said clutch. By the rotation of this pinthe operatorof the lathe may transmit power from the spindle to drive a drillingtool on the turret. This tool, when so driven, will turn in the oppositedirection from the work carried by the chuck, and the operation of thedrill be facilitated and the capacity of the lathe in creased. Otherhead-blocks on the turret may be equipped with a drive mechanism, ifdesired. The principle, however, is sufficiently illustrated in theexample shown.

Upon the turret I provide a series of the adjustable face blocks orsupports 17, hereinbefore described, wherein tools of various kinds maybe carried at any desired angle. 51 is a tool-holder, adjustablysupported upon each facing head .17 by means of a slot 52 and bolts 53.A block 54 has a dovetailed connection with the holder 51, and isadjustable thereon by means of a screw 55.

This block, preferably, has a vertical slot- 56, and is provided withholes 57 to receive bolts 58 on a tool carrier 59. This carrier has aslot 60, and a series of set screws 61. A similar holder 62 isadjustably mounted on each facing head 17 in the same manner as theholder 51, and carries a horizontal block 63 adjustable by means of ascrew 64, and locked in the desired adjustment by setscrews 65. Uponloosening these screws and turning the screw 64, the block may beadjusted horizontally back and forth on its support. These holders, itwill be noted upon anexamination of Figs. 6 and 7, overhang the turretand do not, in any way, interfere with its free revolution.

In addition to the holders described, the facing heads are provided, asindicated in Fig. 5, with a series of slots 66, 67, 68 and 69, providedwith screws 70, by means of which a facing tool may be secured in saidslots. A block 62, corresponding substantially to the block 62, ispreferably mounted on the opposite side of the facing-head, and has aslot forming a continuation of the slot 67. By means of these differenttoolholders, the turret may be easily and quickly adapted for any workdesired. The movement of the carriage is controlled by a mechanismillustrated and described in my pending application filed March 30,1908, Serial No. 424,159, and Iwill now proceed to describe a releasingor tripping mechanism by means of which the carriage drive gear isrendered inoperative at a predetermined point dependent upon theadjustment of the turret.

71 is a shaft supported in gearings 72 on the turret carriage, parallelwith "the lathebed, and carries a wheel 73, wherein a series of rods 74are adjustably held, by means of set screws 75. These rods are capableof independent lengthwise adjustment in their support. A pinion 76 issecured on said shaft. A segmental rack 77, adapted to engage saidpinion, is pivoted at 78 on the turret carriage, and has an arm 79 whichprojects into the path of the cam ring 33, and is actuated to rotate theshaft '71 when the turret is revolved. A stop 76 is mounted on the lathebed and carries a pin 77 that is normally held forward by a spring 78'.The stop 76 has an inclined surface 79 (see Fig. 9) which, when engagedby one of the rods 74, will cause rotation of the shaft 71, theparticular rod engaging the stop device being determined by theadjustment of the turret. For instance, there will preferably be as manyrods 74 as there are headblocks on the turret, and the rotary adjustmentof the turret will determine the rod to engage the stop device and tripthe carriage operating gear. After tripping the feed mechanism, theturret carriage may be brought forward by hand, so that. any one of therods 74 can be brought solidly against the stop 76', thereby giving arepetition of exact measurements from the turret tools to the face ofchuck or work being operated upon. A disk 79 is secured on the end ofthe shaft 71 and has a series of recesses 80 therein to receive a pin 81mounted in a lever 82, that is pivoted at 83 on the carriage, and hasratchetteeth 84 and 85, with a smooth surface 86 between them. Thecarriage operating lever 87 has a pin 88 to engage the ratchet teeth,and lock the said lever 1n position to drive the carriage forward orbackward, the intermediate adjustment between the ratchet teeth beingthe neutral or inoperative position.

Upon the rotation of the shaft 71 by the stop block 76, the lever 82will be tilted on its pivot, disengaging the pin 81 from its recess inthe disk, and allowing the lever 87 to move to the neutral position,between the ratchet teeth, at which point the carriage driving gearswill be rendered inoperative and the carriage will stop.

The turret receives an additional support from the frame at the oppositeend of the machine through the shaft 44, which has a sliding connectionwith the casting 40, in which the. vertical shaft 38. is mounted. Thisconnection assists in maintaining the rigid position of the turret whenthe tools are in operatibn.

The details ofthe construction may be varied in many particulars withoutdeparting from my invention.

I claim as my invention:

1. The combination with a lathe bed including a head stock and carriage,of a turret mounted on said carriage, and provided with an uprightstandard, a driving shaft receiving motion from the head stock, and

having a pair of spaced bearings in the upper portion of the standard,said bearings being arranged to permit free movement ofthe turret andcarriage, a tool holder mounted in said turret, and a vertical drivingconnection arranged centrally of the standard for transmitting motionfrom the shaft .to the tool holder.

2. In a lathe, including a head stock, a carriage, a turret mounted onthe carriage, and provided with an upright standard having a pair ofspaced bearings, a shaft extending through the bearings, and having adriving connection with the head stock, said shaft having a key way forapproximately its entire length, a miter gear mounted loosely on theshaft, a clutching member arranged to revolve with the shaft, andadapted to engage said miter gear, a tool holder, mounted in the turretand provided with a miter gear, and a vertical shaft arranged centrallyof the standard and provided with gears connecting said miter gears.

3. In a turret lathe, a carriage, a turret table provided with a seriesof headblocks, and having a diametrically extending groove in its upperface, and a facing head mounted in said groove, and adjustable along thelength thereof.

4. In a turret lathe, a carriage, a turret table revolubly mountedthereon, and provided with head blocks arranged in diametrically opposedpairs, the upper face of the table being provided with a diametricallyarranged groove extending across the table between the pairs of headblocks, and a facing head adjustable longitudinally of said groove.

5. The combination, with a carriage, of a turret having a depending hubseated thereon, a rotating locking ring mounted on said hub, a lugcarried by said ring and having a cam surface, a pin, movable within asocket in said carriage, and adapted to enter a recess in said turretand 'lock the same against revolution, said pin having a part engaged bysaid lock, and means for rotating said ring to move said pin to itslooking or releasing position.

6. The combination, with a carriage, of a turret, mounted to revolvethereon, and having a depending hub, a locking ring rotatably mounted onsaid hub and having a cam surface to engage. a corresponding surfaceprovided on said carriage, said hub having a part between which and saidfixed cam surface said ring is rotatable, a pin mounted in said carriageand adaptedto enter a recess in said turret and lock it againstmovement, said pin having a recess in one side and a 1n having a camsurface mounted on said ring and fitting within said recess, wherebywhen said ring is rotated said pin will be reciprocated.

7. The combination, with a carriage, of a turret having a depending hubseated on said carriage, said turret having a boss inclosed by said hub,and said carriage having a stud to coincide with said boss, a king boltpassing down through said boss and stud, and pivotally connecting saidturret and carriage, said stud having a coiled spring thereon and aball-bearing interposed between said spring and said boss, said springbeing under compression and relieving the dead load of the turret on itsseat.

8. The combination, with a lathe bed, and a carriage thereon, and meansfor driving said carriage, of a shaft mounted in said carriage, a wheelsecured thereon, a rod adjustable lengthwise in said wheel, meansconnected with said shaft and actuated thereby for tripping said drivingmeans, and means in the path of said rod for operating the same androtating said shaft at a predetermined point in the movement. of thecarriage.

9. The combination, with a lathe bed, of a carriage mounted thereon,means for driving the same, a revolving turret mounted on said carriage,a shaft carried by said carriage, a stop device, means mounted on saidshaft and arranged to engage said stop device and cause the partialrotation of said shaft, said stop engaging means being located atdifferent distances from said stop device and corresponding in number tothe tool-holders on said turret, means actuated by the rotary adjustmentof said turret for revolving said shaft and adjusting said actuatingmeans until the means representing a certain tool holder is in line withthe stop device, and means actuated by the revolution of said shaft forrendering said driving means inoperative, substantially as described.

10. The combination, with a lathe bed, of a carriage mounted thereon andhaving a driving means and a tripping mechanism therefor, a turretmounted on said carriage and having a hub provided with a cam surface, ashaft mounted on said carriage and having a pinion, a rack bar arrangedto engage said pinion and having an arm in contact with said camsurface, whereby rotary movement of said turret will impart acorresponding rotary movement to said shaft. a series of shaft rotatingdevices mounted thereon and corresponding in number to the tool holderson said turret, a stop device in the path of said shaft rotating devices, a rotary adjustment of said turret determining the particularshaft rotating device that is adjusted in line with said stop device,said shaft rotating devices being adapted to engage said stop device atdifferent points in the movement of the carriage, and said trippingmechanism having a part actuated by the rotation of said shaft forrendering said drivin means inoperative, substantially as described.

11. The combination, with a lathe bed, of a carriage mounted thereon,and having a driving means and a tripping mechanism therefor, a turretmounted on said carriage and having a series of tool holders, a shaftcarried by said carriage, a disk secured thereon, a series ofrodsadjustably mounted in said disk lengthwise of said shaft, a stop devicein the path of said rods and causing the rotation of said shaft atpredetermined points in the movement of said carriage, mechanismconnecting said shaft with said turret and whereby the rotation of saidturret will impart a corresponding movement to said shaft and adjust acertain rod in line with said stop device, and means whereby therotation of said shaft will actuate said trip mechanism to render saiddriving means inoperative.

In witness whereof, I have hereunto set my hand this 7th day of May1908.

GEORGE A. STEINLE. Vitnesses t G. S. MARTIN, JENNIE B. DAVIS.

